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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2021 Intel Corporation
*/
#ifndef _RTE_THASH_GFNI_H_
#define _RTE_THASH_GFNI_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <rte_compat.h>
#include <rte_log.h>
#ifdef RTE_ARCH_X86
#include <rte_thash_x86_gfni.h>
#endif
/**
* @internal
* Stubs only used when GFNI is not available.
*/
__rte_internal
uint32_t
rte_thash_gfni_stub(const uint64_t *mtrx, const uint8_t *key, int len);
__rte_internal
void
rte_thash_gfni_bulk_stub(const uint64_t *mtrx, int len, uint8_t *tuple[],
uint32_t val[], uint32_t num);
#ifndef RTE_THASH_GFNI_DEFINED
/**
* Calculate Toeplitz hash.
*
* @param m
* Pointer to the matrices generated from the corresponding
* RSS hash key using rte_thash_complete_matrix().
* @param tuple
* Pointer to the data to be hashed. Data must be in network byte order.
* @param len
* Length of the data to be hashed.
* @return
* Calculated Toeplitz hash value.
*/
static inline uint32_t
rte_thash_gfni(const uint64_t *mtrx, const uint8_t *key, int len)
{
return rte_thash_gfni_stub(mtrx, key, len);
}
/**
* Bulk implementation for Toeplitz hash.
*
* @param m
* Pointer to the matrices generated from the corresponding
* RSS hash key using rte_thash_complete_matrix().
* @param len
* Length of the largest data buffer to be hashed.
* @param tuple
* Array of the pointers on data to be hashed.
* Data must be in network byte order.
* @param val
* Array of uint32_t where to put calculated Toeplitz hash values
* @param num
* Number of tuples to hash.
*/
static inline void
rte_thash_gfni_bulk(const uint64_t *mtrx, int len, uint8_t *tuple[],
uint32_t val[], uint32_t num)
{
rte_thash_gfni_bulk_stub(mtrx, len, tuple, val, num);
}
#endif /* RTE_THASH_GFNI_DEFINED */
#ifdef __cplusplus
}
#endif
#endif /* _RTE_THASH_GFNI_H_ */
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